She then flew to North Brazil and rode to Rio in time for the opening ceremony on Friday, August 5.

A friend said "She had checked the medical risks and been told she didn’t need to take anti-malaria drugs because of where she was travelling.’

"Charlie started vomiting at the ceremony and thought it was dehydration and general fatigue from the cycle.

"In the early hours after the ceremony, she went to the hospital and was treated for dehydration." Last week she shared posts on social media saying she had a ‘serious infection’, but her condition has since worsened and her kidneys have stopped working.